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Chess Opening Theory/1. e4/1...e6/2. d4/2...d5/3. Nc3/3...Bb4/4. e5/4...c5

Winawer variation
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Position in Forsyth-Edwards Notation (FEN)
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5
ECO code: C17-C19
Parent: Winawer variation

4...c5

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This is the main line of the Winawer variation. Black has just pushed forward his c pawn with 4...c5, threatening White's pawn chain. White's knight on c3 prevents them from extending the chain by moving a pawn to c3, so this puts White's central pawns in danger.

However, c5 also blocks the escape route for Black's dark-squared bishop. White usually takes advantage of this to regain the initiative with 5. a3. Black usually trades bishop for knight with 5...Bxc3+ 6. bxc3.

Theory table

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1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5

5 6
Main line a3
Bxc3+
bxc3
Ne7

References

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v · t · e
Chess Opening Theory
1. e4 e5
Open game
2. Nf3
With 2...Nc6:
  • Four knights ( )
  • Italian game ( )
  • Spanish game ( )

With other 2nd moves:

2. Other
1. e4 c5
Sicilian defence
1. e4 ...other: